Inertial Measurement Device

Abstract

An inertial measurement device includes: a first case and a second case; a board that is disposed in a space formed by the first case and the second case, that includes a first surface and a second surface, and in which a first inertial sensor is disposed at the first surface; a first filling material configured to fill between the first surface of the board and the first case and between the first inertial sensor and the first case; and a second filling material configured to fill between the second surface of the board and the second case.

What is claimed is: 
     
         1 . An inertial measurement device comprising:
 a first case and a second case;   a board that is disposed in a space formed by the first case and the second case, that includes a first surface and a second surface, and in which a first inertial sensor is disposed at the first surface;   a first filling material configured to fill between the first surface of the board and the first case and between the first inertial sensor and the first case; and   a second filling material configured to fill between the second surface of the board and the second case.   
     
     
         2 . The inertial measurement device according to  claim 1 , comprising
 a second inertial sensor disposed at the second surface of the board, wherein   the second filling material fills between the second surface of the board and the second case and between the second inertial sensor and the second case.   
     
     
         3 . The inertial measurement device according to  claim 1 , wherein
 the first case includes a first adjustment portion configured to adjust a thickness of the first filling material such that a portion overlapping the first inertial sensor in a plan view is thinner than other portions, and   the second case includes a second adjustment portion configured to adjust a thickness of the second filling material such that a portion overlapping the first inertial sensor in the plan view is thinner than other portions.   
     
     
         4 . The inertial measurement device according to  claim 3 , wherein
 the first adjustment portion and the second adjustment portion adjust the thickness of the first filling material and the thickness of the second filling material to be substantially the same in portions overlapping the first inertial sensor in the plan view.   
     
     
         5 . The inertial measurement device according to  claim 1 , comprising
 a second inertial sensor disposed at the second surface of the board, wherein   the first case includes a first adjustment portion configured to adjust a thickness of the first filling material such that a portion overlapping the first inertial sensor in a plan view is thinner than other portions,   the second case includes a second adjustment portion configured to adjust a thickness of the second filling material such that a portion overlapping the second inertial sensor in the plan view is thinner than other portions,   the second filling material fills between the second surface of the board and the second case and between the second inertial sensor and the second case, and   the first adjustment portion and the second adjustment portion adjust the thickness of the first filling material and the thickness of the second filling material to be substantially the same in portions overlapping the second inertial sensor in the plan view.   
     
     
         6 . The inertial measurement device according to  claim 3 , wherein
 the first adjustment portion is a protrusion provided in the first case, and   the second adjustment portion is a protrusion provided in the second case.   
     
     
         7 . The inertial measurement device according to  claim 1 , wherein
 a second inertial sensor disposed at the second surface of the board is provided,   the first case has a first recess formed corresponding to a shape of the first inertial sensor,   the second case has a second recess formed corresponding to a shape of the second inertial sensor,   the first filling material fills between the first surface of the board and the first recess and between the first inertial sensor and the first recess, and   the second filling material fills between the second surface of the board and the second recess and between the second inertial sensor and the second recess.   
     
     
         8 . The inertial measurement device according to  claim 1 , wherein
 the first case is accommodated in an accommodating portion of the second case, and   the accommodating portion includes a stopper portion configured to prevent the first case from falling.   
     
     
         9 . The inertial measurement device according to  claim 8 , wherein
 a first cutout portion is formed on one side of the first case,   a second cutout portion is formed in the accommodating portion of the second case, and   when the first case is set in the accommodating portion of the second case, a storage portion that stores the overflowed second filling material is formed by the first cutout portion and the second cutout portion.